CN101765276A - Illumination system and illumination control method thereof - Google Patents
Illumination system and illumination control method thereof Download PDFInfo
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- CN101765276A CN101765276A CN201010110729A CN201010110729A CN101765276A CN 101765276 A CN101765276 A CN 101765276A CN 201010110729 A CN201010110729 A CN 201010110729A CN 201010110729 A CN201010110729 A CN 201010110729A CN 101765276 A CN101765276 A CN 101765276A
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Abstract
The invention discloses an illumination system, comprising a plurality of illumination light sources and a control unit used for controlling the on-off working frequency of the illumination light sources to be higher than the frequency of persistence of vision of eyes. The invention further discloses an illumination control method of the illumination system; the control unit is used for controlling the on-off working frequency of the illumination light sources so as to lead the on-off working frequency of the illumination light sources to be higher than the frequency of the persistence of the vision of the eyes. Under the precondition of ensuring invariant illumination effect, the invention reduces the power of the light by improving the energy efficiency of the whole light, thereby reducing the power consumption per se and the heat productivity of the light sources and achieving the aims of reducing the cost of the whole light and further saving energy.
Description
Technical field
The present invention relates to lighting field, particularly relate to a kind of illuminator and illumination control method thereof that utilizes the persistence of vision function raising light source efficiency of human eye.
Background technology
Electric light source mainly contains three major types at present: incandescent lamp, low-pressure discharge lamp and high-pressure discharge lamp, this three classes lamp all is to work by exchanging under 50HZ or the 60HZ Alternating Current Power Supply condition, become the high-frequency current power supply after employing is rectified into direct current or frequency conversion with electric main, the electric light source of Alternating Current Power Supply also can change with the luminous intensity of its light source of variation that is applied to voltage on the light source thereupon generally speaking.As Fig. 1-the 3rd, the change curve of the operating voltage of typical gas discharge lamp, lamp power and output intensity.
In order to obtain higher light intensity and better illuminating effect, first-selectedly have to adopt the method that improves lamp power to realize improving the target of illumination after adopting high efficiency light source and efficient light fixture.But increase energy consumption that lamp power will certainly bring increases ligthing paraphernalia, cost, caloric value or the like unfavorable factor.And improving on the efficiency method of lighting source in the prior art, except that the light efficiency of further raising light source, the design that reduces the oneself power consumption of light source annex ballast and improve supporting light fixture improve the utilance of limited luminous flux, also there are not other modes can further improve the efficiency of light source.
Summary of the invention
The technical problem to be solved in the present invention is the defective that also can increase energy consumption, cost and caloric value when illuminator of the prior art improves efficiency in order to overcome, and a kind of illuminator and illumination control method thereof that utilizes the persistence of vision function raising light source efficiency of human eye is provided.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of illuminator, it comprises some lighting sources, and its characteristics are that this illuminator also comprises a control unit, and the switch operating frequency that this control unit is used to control described lighting source is higher than the persistence of vision frequency of human eye.
Preferably, described lighting source for can be in millisecond instantaneous starting and reach the light source of peak light intensity output.
Preferably, described lighting source is a led light source, perhaps need not solid state light emitter, gaseous discharge lamp or the arc discharge lamp of pipeline start up by preheating.
Preferably, this control unit is used for converting the 50HZ alternating current to 100 all unidirectional pulse power supplys after full-wave rectification, so that the switch operating frequency of described lighting source is higher than the persistence of vision frequency of human eye.
Preferably, this control unit is used for converting the 50HZ alternating current to 50 all unidirectional pulse power supplys after halfwave rectifier, so that the switch operating frequency of described lighting source is higher than the persistence of vision frequency of human eye.
Preferably, this control unit comprises a pulse generator, this control unit is used for the 50HZ alternating current being transformed into the pulse power that was higher than for 25 weeks by pulse generator again after converting direct current to after the full-wave rectification, so that the switch operating frequency of described lighting source is higher than the persistence of vision frequency of human eye.
Preferably, described some lighting sources are divided into many groups, and this control unit is used to control described many group lighting sources and rotates switch, so that the switch operating frequency of described lighting source is higher than the persistence of vision frequency of human eye.
Preferably, this illuminator also comprises a tentiform luminous element, and this tentiform luminous element places between each lighting source and the photographed object.
Another technical scheme of the present invention is: a kind of illumination control method of aforesaid illuminator, its characteristics are, with described control unit the switch operating frequency of described lighting source is controlled, made the switch operating frequency of described lighting source be higher than the persistence of vision frequency of human eye.
Preferably, described control unit converts the 50HZ alternating current to the pulse power, and the frequency of this pulse power is higher than the persistence of vision frequency of human eye.
Preferably, by changing the starting resistor of described mains lighting supply, the width of paired pulses power supply is controlled.
Preferably, the conducting and the turn-off characteristic of the controllable current by adopting the controllable silicon electronic component, the width of paired pulses power supply is controlled.
Preferably, the control unit of this illuminator comprises a pulse generator, this control unit is used for the 50HZ alternating current after converting direct current to after the full-wave rectification, be transformed into the pulse power that was higher than for 25 weeks by pulse generator again, switch periods and the switching time of this method by pulse generator is set, the width of paired pulses power supply is controlled.
Positive progressive effect of the present invention is: the present invention is guaranteeing under the constant prerequisite of illuminating effect, reduces lamp power by improving the efficiency of putting in order lamp, thereby realizes reducing light source oneself power consumption and caloric value, reaches and reduces whole lamp cost and further energy-conservation target.
Description of drawings
Fig. 1 is the change in voltage figure of civil power 50HZ alternating current of the prior art.
Fig. 2 is the light intensity curve figure of the light source by mains-supplied of the prior art.
Fig. 3 is the light intensity variation effect figure of the light source that observes visually of the prior art.
Fig. 4 is the change in voltage figure of the pulse power of the present invention.
Fig. 5 is the peak value of pulse intensity variations figure that is produced by the pulse power of the present invention.
Fig. 6 is the light intensity variation effect figure of the light source that observes visually of the present invention.
Fig. 7 is the principle schematic of illuminator of the present invention.
Structural representation when Fig. 8 makes the bulb shape for illuminator of the present invention.
Fig. 9 is that illuminator of the present invention is made the structural representation when being installed in the light fixture.
Figure 10 is the structural representation before and after illuminator of the present invention and the lamp installation.
Figure 11 is for converting the 50HZ alternating current to the process schematic diagram of 100 all unidirectional pulse power supplys after full-wave rectification among the present invention.
Figure 12 is the circuit theory diagrams of Figure 11.
Figure 13 is for converting the 50HZ alternating current to the process schematic diagram of 50 all unidirectional pulse power supplys after halfwave rectifier among the present invention.
Figure 14 is the circuit theory diagrams of Figure 13.
Figure 15 is for adopting the schematic diagram of impulse controller control impuls power supply among the present invention.
Figure 16 is the circuit theory diagrams of Figure 15.
Figure 17 adopts the circuit theory diagrams of scanning sequency control circuit control impuls power supply for the present invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
Shown in Fig. 4-17, illuminator of the present invention comprises some lighting sources, and this illuminator also comprises a control unit, and the switch operating frequency that this control unit is used to control lighting source is higher than the persistence of vision frequency of human eye.Here earlier the persistence of vision is briefly introduced, so that understand the present invention better.
Be example at first with automobile inertia under steam, the oil consumption of travelling of automobile generally is by the decision of the efficient of automotive dead weight and engine, but under same service condition, it is relevant how the practical oil consumption of automobile and driver control throttle, because automobile has kinetic energy in the process of moving and has produced inertia, after running out of steam, automobile can move on, so at this moment realized the purpose of fuel-economizing because of need not power owing to action of inertia.Equally, equally also have " inertia " effect of light in the vision of human eye, we are referred to as " persistence of vision " phenomenon usually, and we have had film and TV to utilize " persistence of vision " principle.In fact the picture tube of video screen has only a luminous point to produce the luminous of full screen at motion scan, has only a luminous point full screen to grow dark in the middle of in a single day the scanning of picture tube stop, and at this moment its point brilliance does not change in fact.We had only only used this phenomenon and principle in the pattern imaging field in the past, and the present invention is exactly according to the principle that persistence of vision phenomenon is used for illuminator, the illuminator of a kind of high energy efficiency of designing.As shown in Figure 6, the area of persistence of vision district b has wherein been realized the high energy efficiency of illuminator greater than the area in the persistence of vision district among Fig. 3.
Because several in the past to adopt all light sources all be by thermal transition Cheng Guang (as incandescent lamp) or by ultraviolet ray excited light-emitting phosphor, all have one by dark to bright start-up course, because the time of this start-up course surpasses the retentivity time of eye of human eye, therefore can not reach above-mentioned effect, having only can be at instantaneous starting in the person of outstanding talent second and can reach light source that peak light intensity exports and just might use human eye vision and persist the function that principle realizes improving the light fixture efficiency.Therefore, the lighting source among the present invention be can be in millisecond instantaneous starting and reach the light source of peak light intensity output, what adopt in the present embodiment is led light source.The present invention must satisfy the instantaneous starting requirement when the adapted electric light source, promptly will satisfy the characteristic that electric light source has instantaneous quick startup, except that adopting led light source, also can adopt the solid state light emitter and gaseous discharge lamp and the arc discharge lamp that need not pipeline start up by preheating.Also must instantaneously reach peak light intensity in addition, can adopt the mode of dot matrix, several are started fast small-power point-source of light low in energy consumption is gathered into high light intensity in the mode of matrix area source.Array light source also can adopt multiple spot or many groups form display, and can be according to point or group, single respectively group power supply or control.The fluorescent material that can also adopt length persistence is to obtain better persistence of vision effect.
Led light source in the present embodiment comprises luminescence chip and driving power, and present embodiment promptly is on existing led light source basis, increases by one and controls the luminescence chip control unit of switching time.This cover control unit is different from the purpose that light control unit commonly used at present is used to change headlamp switch mode variable color light modulation, the time cycle of general control unit control is longer, its period of change is higher than the persistence of vision cycle of human eye, makes people's eyes can observe the phenomenon that this control light changes.And the control unit that is used to improve LED lamp efficiency of the present invention, make the switch operating frequency be higher than the persistence of vision frequency of human eye, promptly at per second more than 25 times, in a switch periods, can select different on-off time ratios with required illuminating effect according to different LED peak light intensities, this on-off time ratio can be predefined, also can be to adjust by the control circuit of adjusting control unit.Fig. 7 shows principle of the present invention, after line voltage 1 converts pulse voltage 2 to, gives led light source 3 power supplies.In addition, after a plurality of LED point-source of lights form the area source of matrix forms, be the illuminating effect that reduces the dazzle of led light source and improve light fixture, the tentiform luminous element 4 that can also between led light source and photographed object 5, increase by and have " light expansion " function.This tentiform luminous element while is not only " printing opacity " but also " opaque " also, obtains the most sufficient effect so that the vision of human eye " persists ".When using this illuminator, with control unit the switch operating frequency of lighting source is controlled, make the switch operating frequency of lighting source be higher than the persistence of vision frequency of human eye, thereby improve the efficiency of light source.
Show two kinds of versions that the present invention adopts as Fig. 8-10.The present invention makes the bulb shape among Fig. 8, and tentiform luminous element 1 covers on the shell 6, is led light source 3 and pulse generator 7 in the shell 6, and integral body connects electricity by lamp holder 8 and can use.Fig. 9,10 is the situation when being made in the present invention in the light fixture, compares with Fig. 8, has lacked lamp holder 8 and tentiform luminous element 1, and pulse generator 7 ' is also different.Lampshade 10 among Figure 10 and lamp casing 11 combinations can be realized having thrown light on.
Wherein, tentiform luminous element 1 is between light source and photographed object, and good material is made to require to select translucent effect for use.When this illumination with " light expansion " function places traditional light fixture with reflection shield with new light sources after, can further expand the light-emitting area area of tentiform luminous element by means of reflective surface, improve the light expanded function.When the illumination that will have " light expansion " function places the light fixture of lampshade with new light sources, also can utilize the light fixture lampshade as the tentiform luminous element, form promptly employed in figure 10.
More than introduced principle of the present invention and version, following mask body is set forth several implementations of the pulse power of the present invention.The requirement of paired pulses power supply of the present invention is, different with selecting for use of traditional lighting source is, can not be confined to that civil power exchanges the 50HZ sine ac power supply or through high frequency electric source after the frequency conversion or the DC power supply behind ballast, but a kind ofly can satisfy electric light source normal moment and start the operate as normal source that reaches peak light intensity, can after reaching peak light intensity, turn-off rapidly light source again and reduction even no longer consume energy as far as possible.In order to reach the effect that obtains maximum persistence of visions, also should do corresponding requirement, 1, the frequency of the pulse power must be higher than more than 25 weeks of persistence of vision frequency per second of human eye to the clock that obtains for this reason.2, the width of the pulse power and deadline width all can adjust as required.3, clock must be guaranteed to provide enough voltage and electric currents to electric light source with enough intensity, guarantees that electric light source can reach peak light intensity in moment.
As Figure 11-16, show the conversion regime of civil power to clock, also be the implementation of aforementioned control unit.Wherein, the switch operating frequency of controlling described lighting source is higher than the mode of the persistence of vision frequency of human eye, can adopt the routine techniques means of those skilled in the art's well-known.The following describes several approach of the present invention, from civil power exchange the 50HZ sine power supply convert to clock that required Gong hypervideo has the light expanded function have following by way of.
(1) shown in Figure 11,12, after full-wave rectification, converts the 50HZ alternating current to 100 weeks (HZ) unidirectional pulse power supply.Wherein V1 represents that LED excites operating voltage, V2 represents the unidirectional sinusoidal peak threshold voltage of power supply, the two-way sinusoidal voltage of 50HZ electric main, after full-wave rectification, form the unidirectional sinusoidal voltage waveform of 100HZ, the right side figure of Figure 11 is by the voltage-controlled pulsed operation of light source works district, and dash area is led light source conducting service area.Among Figure 12, alternating current after the rectifier diode D1-D4, promptly forms unidirectional sinusoidal voltage waveform through current limiting capacitance C1.
(2) shown in Figure 13,14, after halfwave rectifier, convert the 50HZ alternating current to 50 all unidirectional pulse power supplys.Wherein V1 represents that LED excites operating voltage, V2 represents the unidirectional sinusoidal peak threshold voltage of power supply, the two-way sinusoidal voltage of 50HZ electric main, after halfwave rectifier, form the unidirectional sinusoidal voltage waveform of 50HZ, the right side figure of Figure 13 is by the voltage-controlled pulsed operation of light source works district, and dash area is led light source conducting service area.Among Figure 14, alternating current after the rectifier diode D1, promptly forms unidirectional sinusoidal voltage waveform through current-limiting resistance R1.
(3) shown in Figure 15,16, the 50HZ alternating current after converting direct current to after the full-wave rectification, is transformed into the pulse power that was higher than for 25 weeks by pulse generator (or multi-resmator) again.The two-way sinusoidal voltage of 50HZ electric main forms the unidirectional sinusoidal voltage waveform of 100HZ after full-wave rectification, the right side figure of Figure 15 is that dash area is a pulse power width by the pulse power of multi-resmator control output.
In addition as shown in figure 17, by adopting the scanning sequency control circuit also can realize the effect of pulse to light many group electric light sources successively.Adopt some groups of led light sources to carry out the sequential scanning gap and turn on light,, make people's actual observation to constant illuminating effect continuously by means of the persistence of vision function of human eye because every group of light source be just at snap switch by control unit.Each is organized led light source and rotates the work period of switch and can preestablish, and perhaps adjusts by the control circuit of adjusting control unit.
For the width time control of the pulse power, can adopt the routine techniques means of those skilled in the art's well-known.The following describes several approach of the present invention.
(1), changes the starting resistor of apolegamy electric light source.When the sinusoidal in time starting resistor rear conducting that progressively reaches electric light source of the pulse current after all-wave or halfwave rectifier, therefore select for use the electric light source of different starting resistors just can obtain different pulse durations.
(2), adopt the controllable silicon electronic control component.Those skilled in the art can adopt the controllable current conducting and the turn-off characteristic of controllable silicon electronic component, obtain the needed pulse power.
(3), by being set, realize the switch periods and the switching time that change pulse generator.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these execution modes.Therefore, protection scope of the present invention is limited by appended claims.
Claims (13)
1. illuminator, it comprises some lighting sources, it is characterized in that, and this illuminator also comprises a control unit, and the switch operating frequency that this control unit is used to control described lighting source is higher than the persistence of vision frequency of human eye.
2. illuminator as claimed in claim 1 is characterized in that, described lighting source for can be in millisecond instantaneous starting and reach the light source of peak light intensity output.
3. illuminator as claimed in claim 2 is characterized in that, described lighting source is a led light source, perhaps need not solid state light emitter, gaseous discharge lamp or the arc discharge lamp of pipeline start up by preheating.
4. as any described illuminator of claim 1-3, it is characterized in that, this control unit is used for converting the 50HZ alternating current to 100 all unidirectional pulse power supplys after full-wave rectification, so that the switch operating frequency of described lighting source is higher than the persistence of vision frequency of human eye.
5. as any described illuminator of claim 1-3, it is characterized in that, this control unit is used for converting the 50HZ alternating current to 50 all unidirectional pulse power supplys after halfwave rectifier, so that the switch operating frequency of described lighting source is higher than the persistence of vision frequency of human eye.
6. as any described illuminator of claim 1-3, it is characterized in that, this control unit comprises a pulse generator, this control unit is used for the 50HZ alternating current after converting direct current to after the full-wave rectification, be transformed into the pulse power that was higher than for 25 weeks by pulse generator again, so that the switch operating frequency of described lighting source is higher than the persistence of vision frequency of human eye.
7. as any described illuminator of claim 1-3, it is characterized in that, described some lighting sources are divided into many groups, and this control unit is used to control described many group lighting sources and rotates switch, so that the switch operating frequency of described lighting source is higher than the persistence of vision frequency of human eye.
8. illuminator as claimed in claim 1 is characterized in that, this illuminator also comprises a tentiform luminous element, and this tentiform luminous element places between each lighting source and the photographed object.
9. the illumination control method of an illuminator as claimed in claim 1, it is characterized in that, with described control unit the switch operating frequency of described lighting source is controlled, made the switch operating frequency of described lighting source be higher than the persistence of vision frequency of human eye.
10. illumination control method as claimed in claim 9 is characterized in that described control unit converts the 50HZ alternating current to the pulse power, and the frequency of this pulse power is higher than the persistence of vision frequency of human eye.
11. illumination control method as claimed in claim 10 is characterized in that, by changing the starting resistor of described mains lighting supply, the width of paired pulses power supply is controlled.
12. illumination control method as claimed in claim 10 is characterized in that, the conducting and the turn-off characteristic of the controllable current by adopting the controllable silicon electronic component, and the width of paired pulses power supply is controlled.
13. illumination control method as claimed in claim 10, it is characterized in that, the control unit of this illuminator comprises a pulse generator, this control unit is used for the 50HZ alternating current after converting direct current to after the full-wave rectification, be transformed into the pulse power that was higher than for 25 weeks by pulse generator again, switch periods and the switching time of this method by pulse generator is set, the width of paired pulses power supply is controlled.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103188837A (en) * | 2011-12-31 | 2013-07-03 | 胡益锋 | Power circuit for light emitting diode (LED) illuminating lamp |
| CN103561530A (en) * | 2013-11-15 | 2014-02-05 | 程凯芬 | Novel fluorescent energy-saving lamp |
| CN104303598A (en) * | 2012-05-15 | 2015-01-21 | 罗姆股份有限公司 | Illumination device and drive method therefor |
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Application publication date: 20100630 |